Protect your PC

Get Microsoft Security Essentials for the low, low price of free

Microsoft Security Essentials

Use Microsoft Security Essentials to help guard against viruses, spyware, and other malicious software. It provides real-time protection for your home or small business PCs.

Microsoft Security Essentials
is free* and we designed it to be simple to install and easy to use. It runs quietly and efficiently in the background so you don't have to worry about interruptions or making updates.

Key Features

Need security for your business?

Microsoft Security Essentials is available for small businesses with up to 10 PCs. If your business has more than 10 PCs, you can help protect them with
Microsoft System Center 2012 Endpoint Protection
deployed and managed through
Microsoft System Center 2012 R2 Configuration Manager.

New PCs for you

See how you can get things done and have more fun with a Windows 8.1 laptop, tablet, 2-in-1, or desktop.